Sort separate Edits in FileEdit during adding.

pkg/analysis_services/test/correction/fix_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.correction.fix;
 
 import 'package:analysis_services/correction/change.dart';
 import 'package:analysis_services/correction/fix.dart';
 import 'package:analysis_services/index/index.dart';
 import 'package:analysis_services/index/local_memory_index.dart';
@@ skipping 23 matching lines @@
   Change change;
   String resultCode;
 
   void assertHasFix(FixKind kind, String expected) {
     AnalysisError error = _findErrorToFix();
     fix = _assertHasFix(kind, error);
     change = fix.change;
     // apply to "file"
     List<FileEdit> fileEdits = change.fileEdits;
     expect(fileEdits, hasLength(1));
-    // TODO(paulberry): should the code under test be responsible for sorting
-    // the edits?
-    resultCode = Edit.applySorted(testCode, change.fileEdits[0].edits);
+    resultCode = Edit.applySequence(testCode, change.fileEdits[0].edits);
     // verify
     expect(resultCode, expected);
   }
 
   void assertHasPositionGroup(String id, List<Position> expectedPositions) {
     List<LinkedEditGroup> linkedPositionGroups = change.linkedEditGroups;
     for (LinkedEditGroup group in linkedPositionGroups) {
       if (group.id == id) {
         expect(group.positions, unorderedEquals(expectedPositions));
         return;
@@ skipping 1816 matching lines @@
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _indexTestUnit(String code) {
     resolveTestUnit(code);
     index.indexUnit(context, testUnit);
   }
 }